Alex Martelli <[EMAIL PROTECTED]> wrote: > Ben Finney <[EMAIL PROTECTED]> wrote: > > Why is "I want to make objects immutable" seen as "I don't trust > > my users"? Are Python's existing immutable types also seen the > > same way? If not, why the distinction? > > A type implemented in C offers different possibilities than one > implemented in Python -- no deep conceptual reason, just practical > ones.
So, in the hypothetical situation that all Python types were implemented in pure Python, what would the ideal behaviour for immutables be? Or would there be no immutables? > I don't think that making it explicit that you intended to document > the restriction would have changed my answer (although an explicit > acknowlegment that you're looking for restrictions against > accidental misuse rather than against determined attackers surely > would). I'm looking for a "consenting adults" restriction: classes will have immutable instances only where it makes sense from the class protocol. I'm not going to lose sleep over users who go looking for trouble. -- \ "Think for yourselves and let others enjoy the privilege to do | `\ so too." -- Voltaire, _Essay On Tolerance_ | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
